| Knightdale to Corato | 4,875.71 mi (7,846.70 km) |
| Knightdale to Corbetta | 4,403.47 mi (7,086.70 km) |
| Knightdale to Corciano | 4,624.69 mi (7,442.72 km) |
| Knightdale to Cordenons | 4,551.20 mi (7,324.44 km) |
| Knightdale to Cori | 4,702.14 mi (7,567.37 km) |
| Knightdale to Coriano | 4,611.56 mi (7,421.59 km) |
| Knightdale to Corigliano Calabro | 4,936.56 mi (7,944.63 km) |
| Knightdale to Corleone | 4,851.38 mi (7,807.55 km) |
| Knightdale to Cormano | 4,411.93 mi (7,100.32 km) |
| Knightdale to Cornaredo | 4,407.58 mi (7,093.32 km) |
| Knightdale to Cornate d'Adda | 4,422.04 mi (7,116.59 km) |
| Knightdale to Cornedo Vicentino | 4,504.74 mi (7,249.68 km) |
| Knightdale to Correggio | 4,506.31 mi (7,252.20 km) |
| Knightdale to Corridonia | 4,675.46 mi (7,524.42 km) |
| Knightdale to Corsico | 4,413.21 mi (7,102.38 km) |
